EP2537696B1 - Fuel reservoir for a motor vehicle - Google Patents

Fuel reservoir for a motor vehicle Download PDF

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Publication number
EP2537696B1
EP2537696B1 EP12163976.9A EP12163976A EP2537696B1 EP 2537696 B1 EP2537696 B1 EP 2537696B1 EP 12163976 A EP12163976 A EP 12163976A EP 2537696 B1 EP2537696 B1 EP 2537696B1
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EP
European Patent Office
Prior art keywords
fuel reservoir
support
shell body
stress relief
embodied
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12163976.9A
Other languages
German (de)
French (fr)
Other versions
EP2537696A1 (en
Inventor
Günther POZGAINER
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Magna Steyr Fuel Systems GmbH
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Magna Steyr Fuel Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magna Steyr Fuel Systems GmbH filed Critical Magna Steyr Fuel Systems GmbH
Priority to US13/462,961 priority Critical patent/US20120325822A1/en
Priority to CN201210213751.2A priority patent/CN102837597B/en
Publication of EP2537696A1 publication Critical patent/EP2537696A1/en
Application granted granted Critical
Publication of EP2537696B1 publication Critical patent/EP2537696B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03032—Manufacturing of fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03375—Arrangements or special measures related to fuel tanks or fuel handling to improve security
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03453—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03453—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together
    • B60K2015/0346—Arrangements or special measures related to fuel tanks or fuel handling for fixing or mounting parts of the fuel tank together by welding

Definitions

  • the present invention relates to a fuel reservoir for a motor vehicle.
  • a container having a wall, in particular of composite material, which has an inner chamber for receiving a pressurized fluid.
  • the container is flat, with at least two opposite wall surfaces. Hollow or full waves connect the opposite wall surfaces.
  • a biasing element with a screw, nut and washers is provided.
  • a container for storing pressurized gas is known, with a cladding layer which encloses a space provided for storing the compressed gas cavity.
  • a cladding layer which encloses a space provided for storing the compressed gas cavity.
  • the support elements may be formed as threads, which are passed through corresponding guide channels.
  • a fuel reservoir for a motor vehicle having a provided with inflow and outflow shell body from a Plastic material through which a storage space is provided for receiving fuel, wherein within the storage space, a reinforcement for compensating forces acting on the shell body forces is provided, wherein the reinforcement comprises an armature and a strain relief means, wherein the armature formed within the armature receiving space for the strain relief comprises and wherein the strain relief is disposed at least partially in the receiving space of the armature and the shell body rchdringt r, wherein the armature has plane-parallel end surfaces and the armature is integrally connected at its end faces to the shell body and having an open longitudinal rib structure, whereby a good support of Pressure forces is enabled.
  • a substantially rigid reinforcement for compensating forces acting on the shell body forces is provided, in particular the shell body penetrating in places strain relief, formed of a plastic material fuel reservoir can permanently withstand the permanently occurring forces under the environmental conditions ,
  • the anchor is designed as a plastic anchor, so it is made of plastic.
  • the anchor has an elongated shape.
  • the armature is straight in the form of a column.
  • both ends of the strain relief means penetrate the shell body. This makes it possible that train must be taken on both sides of the strain relief not only from the interior of the fuel reservoir.
  • the anchor is welded at its end surfaces with the shell body.
  • the cohesive connection separates the receiving space formed inside the armature for a strain relief from the storage space in a sealing manner. As a result, the receiving space for the strain relief is separated from the fuel in the reservoir.
  • a sealing element in particular a sealing ring, preferably separates the receiving space, which is formed inside the armature, in a sealing manner from the reservoir for a strain relief device.
  • the sealing element ensures a secure, liquid-tight separation between the receiving space and the storage space.
  • the strain relief is a tie bolt, which preferably extends at least partially in a longitudinal bore as a receiving space within the armature.
  • the tension bolt is designed as a screw or rivet bolt whose head acts against a portion of the outer surface of the shell body.
  • heads act against the outer surfaces of the shell body at both ends of the tension bolt.
  • the head of the strain relief is formed by a nut or a nut together with a washer.
  • the head of the tension bolt is sealingly separated from the outside space by a cover cap which is attached to the shell body and is preferably welded onto it.
  • a cover cap which is attached to the shell body and is preferably welded onto it.
  • the fuel emission, in particular hydrocarbon emission can be reduced in the region of the connection points of the reinforcing elements in the region of the shell body.
  • the fuel reservoir comprises a number of reinforcements, which are preferably aligned approximately parallel to each other.
  • the fuel reservoir is thereby supported according to the invention at several points.
  • the fuel reservoir 1 hereinafter referred to as the tank, substantially comprises a shell body 3 made of a plastic material, as well as reinforcements 5 for the compensation of forces acting on the shell body 3.
  • the shell body 3 is preferably formed from a first and a second shell 3a, 3b, which are interconnected via a peripheral flange, preferably welded or materially connected.
  • the reinforcements 5 are, as can be seen from the figures, disposed within the storage space 4 of the tank 1 and each comprise elongated made of plastic anchor 8 and the shell body 3 locally penetrating strain relief means 6, which can transmit tensile forces.
  • the strain relief means 6 have inter alia the task of preventing bulging or contraction of the shell body 3 by the internal pressure.
  • the anchors 8 are designed as columnar elements which are aligned parallel to each other.
  • the anchors 8 have a cylindrical elongated shape and have at their end portions 81 and 82 preferably plane-parallel end surfaces. These comprise a preferably circumferential radial flange.
  • the armature 8 with the shell body 3 and the first and second shell 3a, 3b are materially connected, in particular welded. Larger forces can be transmitted via the surface of the end regions or the radially circumferential flanges.
  • the columnar shaped anchors 8 for example, an open rib structure.
  • the FIG. 2 shows armature 8 in different lengths, which are used according to the distance of the inner surfaces of opposite portions of the first and second shell accordingly.
  • the armatures 8 have plane-parallel end surfaces 81, 82.
  • FIG. 3 The sectional view of the FIG. 3 shows that the armature 8 are designed with a centrally formed extending in the axial direction longitudinal bore.
  • This longitudinal bore is designed as a receiving space 83 for a trained as a draw bolt strain relief 6 with heads 61.
  • this receiving space 83 due to the cohesive connection of the end portions 81, 82 of the armature 8 with the shells 3a, 3b of the shell body 3, optionally supported by further sealing elements 9 between the armature 8 and shell body 3, separated liquid-tight from the reservoir 4.
  • the tie bolts 6 are designed as metal bolts and serve to relieve the strain in the reservoir 4 arranged anchor 8, which are made of a plastic material. This strain relief is necessary because the plastic parts or joints of the plastic parts (welded joint plastic anchor / plastic shells) have a creep under temperature and fuel influence and even when occurring continuous load. Furthermore, plastic has the property to swell under the influence of temperature and fuel. The strain relief 6 allow the shell body 3 despite these properties permanently withstand the permanently occurring forces under the described environmental conditions.
  • the tension bolts 6 are inserted into the longitudinal bore of the armature 8 and are designed as rod-shaped screw or rivet bolts.
  • the end regions of the tension bolts are guided through corresponding through bores of the upper or lower shell 3a, 3b of the shell body 3 and designed such that their heads 61 act against a portion of the outer surface of the shell body 3.
  • the end regions or heads 61 may include a washer, a nut, a flanged rivet, etc.
  • the drawing of the FIG. 3 further shows that the heads 61 of the tie bolt 6 are sealingly separated from the outside by a cohesive mounted on the shell body 3 and preferably welded cap 7.
  • the arrangement of the cap 7, the fuel emission, in particular hydrocarbon emission in the region of the connection points of the reinforcing elements in the region of the shell body 3 can be reduced.
  • the cap 7 further comprises on the inside not shown means for securing the screw head or the nut against unwanted rotation.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The reservoir (1) has a shell body provided with an inlet opening and a discharge opening. A storage chamber is defined by the shell body, and receives fuel. A reinforcement (5) extends through the storage chamber, receives mechanical forces that act on the shell body, and comprises a reinforcement support and a stress relief device i.e. tension pin, where the reinforcement support comprises a receiving chamber extending through and receiving the stress relief device and the stress relief device extends through the receiving chamber and the shell body.

Description

Die vorliegende Erfindung betrifft ein Kraftstoffreservoir für ein Kraftfahrzeug.The present invention relates to a fuel reservoir for a motor vehicle.

Beim Einsatz derartiger Kraftstoffreservoirs (Tank) in Hybridfahrzeugen kann es aufgrund der besonderen Betriebsbedingungen von diesen Fahrzeugen im Inneren des Tanks zum Auftreten von Überdruck oder Unterdruck kommen. Daher müssen diese Tanks einem vom Umgebungsdruck abweichenden erhöhten bzw. verringerten Innendruck dauerhaft widerstehen und eine ausreichende Festigkeit aufweisen. Bislang können nur Tanks aus Metall diesen Anforderungen genügen. Nachteilig hierbei ist allerdings das hohe Gewicht.When using such fuel reservoir (tank) in hybrid vehicles, it may come to the occurrence of excess pressure or negative pressure in the interior of the tank due to the special operating conditions of these vehicles. Therefore, these tanks must permanently withstand a deviated from the ambient pressure increased or reduced internal pressure and have sufficient strength. So far, only metal tanks can meet these requirements. The disadvantage here, however, is the high weight.

Aus der US 6,338,420 ist ein aus zwei Kunststoffschalen bestehender Tank bekannt, dessen Schalenkörper durch eine Säule im Inneren gegen Wölbung durch einen Über- oder Unterdruck versteift sind. Dazu ist die Säule derart ausgebildet, dass sie ein elastisches Ausgleichselement oder zwei reibend ineinander verschiebbare Teile aufweist. Diese bekannte Ausführung gestattet allerdings keine ausreichend dauerhafte Übertragung von Zugkräften bzw. Druckkräften.From the US 6,338,420 is known from two plastic cups existing tank whose shell body are stiffened by a column in the interior against buckling by a positive or negative pressure. For this purpose, the column is designed such that it has an elastic compensating element or two parts which can be displaced into one another in a frictional manner. However, this known design does not allow sufficiently durable transmission of tensile forces or compressive forces.

Aus der gattungsbildenden FR 2 764 671 A1 ist ein Behälter bekannt, mit einer Wand, insbesondere aus Verbundmaterial, die eine innere Kammer zur Aufnahme eines unter Druck stehenden Fluids aufweist. Der Behälter ist flach, mit mindestens zwei gegenüberliegenden Wandflächen. Hohl-oder Vollwellen verbinden die gegenüberliegenden Wandflächen. Wenn die Wellen hohl sind, ist ein Vorspannelement mit einer Schraube, Mutter und Scheiben vorgesehen.From the generic FR 2 764 671 A1 For example, a container is known having a wall, in particular of composite material, which has an inner chamber for receiving a pressurized fluid. The container is flat, with at least two opposite wall surfaces. Hollow or full waves connect the opposite wall surfaces. When the shafts are hollow, a biasing element with a screw, nut and washers is provided.

Aus der DE 197 49 950 A1 ist ein Behälter zum Speichern von Druckgas bekannt, mit einer Hüllschicht, die einen zur Speicherung des Druckgases vorgesehenen Hohlraum umschließt. Im Hohlraum des Behälters sind Stützelemente angeordnet. Die Stützelemente können als Fäden ausgebildet sein, die durch entsprechende Führungskanäle hindurchgeführt sind.From the DE 197 49 950 A1 a container for storing pressurized gas is known, with a cladding layer which encloses a space provided for storing the compressed gas cavity. In the cavity of the container support elements are arranged. The support elements may be formed as threads, which are passed through corresponding guide channels.

Es ist eine Aufgabe der vorliegenden Erfindung ein Kraftstoffreservoir für ein Kraftfahrzeug derart weiterzubilden, dass das Kraftstoffreservoir dauerhaft einem hohen Innendruck, insbesondere Unterdruck und/oder Überdruck, standhält und ein geringes Gewicht aufweist.It is an object of the present invention to develop a fuel reservoir for a motor vehicle in such a way that the fuel reservoir permanently withstands high internal pressure, in particular negative pressure and / or overpressure, and has a low weight.

Diese Aufgabe löst die vorliegende Erfindung durch ein Kraftstoffreservoir für ein Kraftfahrzeug aufweisend einen mit Zu- und Abflussöffnungen versehenen Schalenkörper aus einem Kunststoffmaterial, durch den ein Vorratsraum zur Aufnahme von Kraftstoff vorgegeben ist, wobei innerhalb des Vorratsraums eine Verstärkung zur Kompensation von auf den Schalenkörper wirkenden Kräften vorgesehen ist, wobei die Verstärkung einen Anker und ein Zugentlastungsmittel umfasst, wobei der Anker einen innerhalb des Ankers ausgebildeten Aufnahmeraum für das Zugentlastungsmittel umfasst und wobei das Zugentlastungsmittel zumindest teilweise im Aufnahmeraum des Ankers angeordnet ist und den Schalenkörper du rchdringt, wobei der Anker planparallele Endflächen aufweist und der Anker an seinen Endflächen mit dem Schalenkörper stoffschlüssig verbunden ist und eine offene Längsrippenstruktur aufweist, wodurch eine gute Abstützung von Druckkräften ermöglicht wird.This object is achieved by the present invention by a fuel reservoir for a motor vehicle having a provided with inflow and outflow shell body from a Plastic material through which a storage space is provided for receiving fuel, wherein within the storage space, a reinforcement for compensating forces acting on the shell body forces is provided, wherein the reinforcement comprises an armature and a strain relief means, wherein the armature formed within the armature receiving space for the strain relief comprises and wherein the strain relief is disposed at least partially in the receiving space of the armature and the shell body rchdringt r, wherein the armature has plane-parallel end surfaces and the armature is integrally connected at its end faces to the shell body and having an open longitudinal rib structure, whereby a good support of Pressure forces is enabled.

Aufgrund der erfindungsgemäßen Ausgestaltung, dass innerhalb des Vorratsraums eine im Wesentlichen starre Verstärkung zur Kompensation von auf den Schalenkörper wirkenden Kräften vorgesehen ist, die insbesondere den Schalenkörper stellenweise durchdringende Zugentlastungsmittel umfassen, kann das aus einem Kunststoffmaterial ausgebildete Kraftstoffreservoir den dauerhaft auftretenden Kräften unter den Umgebungsbedingungen dauerhaft standhalten.Due to the embodiment according to the invention that within the storage space, a substantially rigid reinforcement for compensating forces acting on the shell body forces is provided, in particular the shell body penetrating in places strain relief, formed of a plastic material fuel reservoir can permanently withstand the permanently occurring forces under the environmental conditions ,

Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen, der Beschreibung sowie den beigefügten Zeichnungen angegeben.Further developments of the invention are specified in the dependent claims, the description and the accompanying drawings.

Vorzugsweise ist der Anker als Kunststoffanker ausgeführt, ist also aus Kunststoff hergestellt.Preferably, the anchor is designed as a plastic anchor, so it is made of plastic.

Bevorzugt weist der Anker eine längliche Form auf.Preferably, the anchor has an elongated shape.

Besonders bevorzugt ist der Anker säulenförmig gerade ausgebildet.Particularly preferably, the armature is straight in the form of a column.

Bevorzugt durchdringen beide Enden des Zugentlastungsmittels den Schalenkörper. Hierdurch wird ermöglicht dass Zug beiderseits des Zugentlastungsmittels nicht nur aus dem Innenraum des Kraftstoffreservoirs aufgenommen werden muss.Preferably, both ends of the strain relief means penetrate the shell body. This makes it possible that train must be taken on both sides of the strain relief not only from the interior of the fuel reservoir.

Bevorzugt ist der Anker an seinen Endflächen mit dem Schalenkörper verschweißt.Preferably, the anchor is welded at its end surfaces with the shell body.

Besonders bevorzugt trennt die stoffschlüssige Verbindung den innerhalb des Ankers ausgebildeten Aufnahmeraum für ein Zugentlastungsmittel vom Vorratsraum abdichtend. Dadurch ist der Aufnahmeraum für das Zugentlastungsmittel vom Kraftstoff im Vorratsraum getrennt.Particularly preferably, the cohesive connection separates the receiving space formed inside the armature for a strain relief from the storage space in a sealing manner. As a result, the receiving space for the strain relief is separated from the fuel in the reservoir.

Bevorzugt trennt ein Dichtelement, insbesondere ein Dichtungsring den innerhalb des Ankers ausgebildeten Aufnahmeraum für ein Zugentlastungsmittel vom Vorratsraum abdichtend. Das Dichtelement sorgt insbesondere zusätzlich zu einer abdichtenden Verschweißung des Ankers für eine sichere, flüssigkeitsdichte Trennung zwischen Aufnahmeraum und Vorratsraum.A sealing element, in particular a sealing ring, preferably separates the receiving space, which is formed inside the armature, in a sealing manner from the reservoir for a strain relief device. In particular, in addition to a sealing welding of the armature, the sealing element ensures a secure, liquid-tight separation between the receiving space and the storage space.

Bevorzugt ist das Zugentlastungsmittel ein Zugbolzen, der vorzugsweise zumindest teilweise in einer Längsbohrung als Aufnahmeraum innerhalb des Ankers verläuft.Preferably, the strain relief is a tie bolt, which preferably extends at least partially in a longitudinal bore as a receiving space within the armature.

Besonders bevorzugt ist der Zugbolzen als Schraub- oder Nietbolzen ausgeführt, dessen Kopf gegen einen Abschnitt der Außenfläche des Schalenkörpers wirkt. Besonders bevorzugt wirken an beiden Enden des Zugbolzens Köpfe gegen die Außenflächen des Schalenkörpers. Hierdurch wird eine besonders sichere Aufnahme von Zugkräften gewährleistet.Particularly preferably, the tension bolt is designed as a screw or rivet bolt whose head acts against a portion of the outer surface of the shell body. Particularly preferably, heads act against the outer surfaces of the shell body at both ends of the tension bolt. As a result, a particularly secure absorption of tensile forces is ensured.

Bevorzugt ist der Kopf des Zugentlastungsmittels durch eine Schraubenmutter oder eine Schraubenmutter zusammen mit einer Unterlegscheibe gebildet.Preferably, the head of the strain relief is formed by a nut or a nut together with a washer.

Vorzugsweise wird der Kopf des Zugbolzens durch eine stoffschlüssig auf dem Schalenkörper angebrachte und vorzugsweise aufgeschweißte Abdeckkappe vom Außenraum abdichtend getrennt. Durch die Abdeckkappe kann die Kraftstoffemission, insbesondere Kohlenwasserstoffemission im Bereich der Anbindungsstellen der Verstärkungselemente im Bereich des Schalenkörpers reduziert werden.Preferably, the head of the tension bolt is sealingly separated from the outside space by a cover cap which is attached to the shell body and is preferably welded onto it. Through the cap, the fuel emission, in particular hydrocarbon emission can be reduced in the region of the connection points of the reinforcing elements in the region of the shell body.

Besonders bevorzugt umfasst das Kraftstoffreservoir eine Anzahl von Verstärkungen, die vorzugsweise annähernd parallel zueinander ausgerichtet sind. Das Kraftstoffreservoir wird dadurch an mehreren Stellen erfindungsgemäß abgestützt.Particularly preferably, the fuel reservoir comprises a number of reinforcements, which are preferably aligned approximately parallel to each other. The fuel reservoir is thereby supported according to the invention at several points.

Die Erfindung wird im Folgenden beispielhaft unter Bezugnahme auf die Zeichnungen beschrieben.The invention will now be described by way of example with reference to the drawings.

Darin zeigen:

Fig. 1
eine perspektivische schematische Ansicht eines Kraftstoffreservoirs für ein Kraftfahrzeug der vorliegenden Erfindung;
Fig. 2
Anker als Einzelteile in unterschiedlich ausgeführten Längen in einer perspektivischen Ansicht, und
Fig. 3
eine Schnittdarstellung durch eine innerhalb des Vorratsraums angeordnete Verstärkung mit einem den Schalenkörper durchdringenden Zugentlastungsmittel und einem Anker.
Show:
Fig. 1
a perspective schematic view of a fuel reservoir for a motor vehicle of the present invention;
Fig. 2
Anchor as individual parts in different lengths executed in a perspective view, and
Fig. 3
a sectional view through a arranged within the reservoir reinforcement with a shell body penetrating strain relief and an anchor.

Das in der Figur 1 in schematischer perspektivischer Darstellung abgebildete Kraftstoffreservoir 1, nachfolgend kurz Tank genannt, umfasst im Wesentlichen einen Schalenkörper 3 aus einem Kunststoffmaterial, sowie Verstärkungen 5 zur Kompensation von auf den Schalenkörper 3 wirkenden Kräften. Der Schalenkörper 3 ist vorzugsweise aus einer ersten und einer zweiten Schale 3a, 3b gebildet, die über einen umlaufenden Flansch miteinander verbunden, vorzugsweise verschweißt bzw. stoffschlüssig verbunden sind.That in the FIG. 1 In a schematic perspective illustration, the fuel reservoir 1, hereinafter referred to as the tank, substantially comprises a shell body 3 made of a plastic material, as well as reinforcements 5 for the compensation of forces acting on the shell body 3. The shell body 3 is preferably formed from a first and a second shell 3a, 3b, which are interconnected via a peripheral flange, preferably welded or materially connected.

Die Verstärkungen 5 sind, wie es aus den Figuren zu erkennen ist, innerhalb des Vorratsraumes 4 des Tanks 1 angeordnet und umfassen jeweils längliche aus Kunststoff ausgeführte Anker 8 sowie den Schalenkörper 3 stellenweise durchdringende Zugentlastungsmittel 6, die Zugkräfte übertragen können. Die Zugentlastungsmittel 6 haben unter anderem die Aufgabe ein Ausbeulen bzw. Zusammenziehen des Schalenkörpers 3 durch den Innendruck zu verhindern. Die Anker 8 sind dabei als säulenförmige Elemente ausgeführt, die parallel zueinander ausgerichtet sind. Die Anker 8 weisen eine zylindrische längliche Form auf und weisen an ihren Endbereichen 81 und 82 vorzugsweise planparallele Endflächen auf. Diese umfassen einen vorzugsweise umlaufenden radial verlaufenden Flansch. Mittels der Endbereiche 81, 82 sind die Anker 8 mit dem Schalenkörper 3 bzw. der ersten und zweiten Schale 3a, 3b stoffschlüssig verbunden, insbesondere verschweißt. Über die Fläche der Endbereiche bzw. der radial umlaufenden Flansche können größere Kräfte übertragen werden.The reinforcements 5 are, as can be seen from the figures, disposed within the storage space 4 of the tank 1 and each comprise elongated made of plastic anchor 8 and the shell body 3 locally penetrating strain relief means 6, which can transmit tensile forces. The strain relief means 6 have inter alia the task of preventing bulging or contraction of the shell body 3 by the internal pressure. The anchors 8 are designed as columnar elements which are aligned parallel to each other. The anchors 8 have a cylindrical elongated shape and have at their end portions 81 and 82 preferably plane-parallel end surfaces. These comprise a preferably circumferential radial flange. By means of the end portions 81, 82, the armature 8 with the shell body 3 and the first and second shell 3a, 3b are materially connected, in particular welded. Larger forces can be transmitted via the surface of the end regions or the radially circumferential flanges.

Wie es aus der Detaildarstellung der Figur 2 zu ersehen ist, weisen die säulenförmig ausgebildeten Anker 8 beispielsweise eine offene Rippenstruktur auf. Die Figur 2 zeigt Anker 8 in unterschiedlichen Längen, die je nach Abstand der Innenflächen gegenüberliegender Bereiche der ersten und zweiten Schale entsprechend eingesetzt werden. Die Anker 8 weisen planparallele Endflächen 81,82 auf. Innerhalb der Anker 8 ist jeweils ein Aufnahmeraum für ein Zugentlastungsmittel angeordnet.As it is from the detailed representation of the FIG. 2 can be seen, the columnar shaped anchors 8, for example, an open rib structure. The FIG. 2 shows armature 8 in different lengths, which are used according to the distance of the inner surfaces of opposite portions of the first and second shell accordingly. The armatures 8 have plane-parallel end surfaces 81, 82. Within the armature 8, a receiving space for a strain relief is arranged in each case.

Die Schnittdarstellung der Figur 3 zeigt, dass die Anker 8 mit einer mittig ausgebildeten in Axialrichtung verlaufenden Längsbohrung ausgeführt sind. Diese Längsbohrung ist als Aufnahmeraum 83 für ein als Zugbolzen ausgebildetes Zugentlastungsmittel 6 mit Köpfen 61 ausgeführt. Im zusammengebauten Zustand ist dieser Aufnahmeraum 83 aufgrund der stoffschlüssigen Verbindung der Endbereiche 81, 82 der Anker 8 mit den Schalen 3a, 3b des Schalenkörpers 3, gegebenenfalls unterstützt durch weitere Dichtelemente 9 zwischen Anker 8 und Schalenkörper 3, vom Vorratsraum 4 flüssigkeitsdicht abgetrennt.The sectional view of the FIG. 3 shows that the armature 8 are designed with a centrally formed extending in the axial direction longitudinal bore. This longitudinal bore is designed as a receiving space 83 for a trained as a draw bolt strain relief 6 with heads 61. In the assembled state, this receiving space 83 due to the cohesive connection of the end portions 81, 82 of the armature 8 with the shells 3a, 3b of the shell body 3, optionally supported by further sealing elements 9 between the armature 8 and shell body 3, separated liquid-tight from the reservoir 4.

Die Zugbolzen 6 sind als Metallbolzen ausgeführt und dienen der Zugentlastung der im Vorratsraum 4 angeordneten Anker 8, die aus einem Kunststoffmaterial ausgeführt sind. Diese Zugentlastung ist notwendig, da die Kunststoffteile bzw. Verbindungsstellen der Kunststoffteile (Schweißverbindung Kunststoffanker/Kunststoffschalen) unter Temperatur und Kraftstoffeinfluss und auch bei auftretender Dauerbelastung ein Kriechverhalten aufweisen. Des Weiteren besitzt Kunststoff die Eigenschaft unter dem Einfluss von Temperatur und Kraftstoff zu quellen. Die Zugentlastungsmittel 6 ermöglichen, dass der Schalenkörper 3 trotz dieser Eigenschaften den dauerhaft auftretenden Kräften unter den beschriebenen Umgebungsbedingungen dauerhaft standhält. Die Zugbolzen 6 sind in die Längsbohrung der Anker 8 eingesetzt und sind als stabförmige Schraub- oder Nietbolzen ausgebildet. Die Endbereiche der Zugbolzen sind durch entsprechende Durchgangsbohrungen der oberen bzw. unteren Schale 3a, 3b des Schalenkörpers 3 geführt und derart ausgebildet, dass deren Köpfe 61 gegen einen Abschnitt der Außenfläche des Schalenkörpers 3 wirken. Die Endbereiche bzw. Köpfe 61 können dabei eine Unterlegscheibe, eine Mutter, ein umgebördeltes Niet etc. umfassen. Die Zeichnung der Figur 3 zeigt weiterhin, dass die Köpfe 61 der Zugbolzen 6 durch eine stoffschlüssige auf dem Schalenkörper 3 angebrachte und vorzugsweise aufgeschweißte Abdeckkappe 7 vom Außenraum abdichtend abgetrennt sind. Durch die Anordnung der Abdeckkappe 7 kann die Kraftstoffemission, insbesondere Kohlenwasserstoffemission im Bereich der Anbindungsstellen der Verstärkungselemente im Bereich des Schalenkörpers 3 reduziert werden. Die Abdeckkappe 7 weist des Weiteren innenseitig nicht dargestellte Mittel zur Sicherung des Schraubenkopfes oder der Mutter gegen eine ungewollte Verdrehung auf.The tie bolts 6 are designed as metal bolts and serve to relieve the strain in the reservoir 4 arranged anchor 8, which are made of a plastic material. This strain relief is necessary because the plastic parts or joints of the plastic parts (welded joint plastic anchor / plastic shells) have a creep under temperature and fuel influence and even when occurring continuous load. Furthermore, plastic has the property to swell under the influence of temperature and fuel. The strain relief 6 allow the shell body 3 despite these properties permanently withstand the permanently occurring forces under the described environmental conditions. The tension bolts 6 are inserted into the longitudinal bore of the armature 8 and are designed as rod-shaped screw or rivet bolts. The end regions of the tension bolts are guided through corresponding through bores of the upper or lower shell 3a, 3b of the shell body 3 and designed such that their heads 61 act against a portion of the outer surface of the shell body 3. The end regions or heads 61 may include a washer, a nut, a flanged rivet, etc. The drawing of the FIG. 3 further shows that the heads 61 of the tie bolt 6 are sealingly separated from the outside by a cohesive mounted on the shell body 3 and preferably welded cap 7. The arrangement of the cap 7, the fuel emission, in particular hydrocarbon emission in the region of the connection points of the reinforcing elements in the region of the shell body 3 can be reduced. The cap 7 further comprises on the inside not shown means for securing the screw head or the nut against unwanted rotation.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
KraftstoffreservoirFuel reservoir
22
Zu- und AbflussöffnungenInflow and outflow openings
3, 3a, 3b3, 3a, 3b
Schalenkörpershell body
44
Vorratsraumpantry
55
Verstärkungreinforcement
66
Zugentlastungsmittelstrain relief
6161
Kopfhead
77
Abdeckkappecap
88th
Ankeranchor
81, 8281, 82
Endflächenend surfaces
8383
Aufnahmeraumaccommodation space
99
Dichtelementsealing element

Claims (15)

  1. Fuel reservoir (1) for a motor vehicle, comprising a shell body (3, 3a, 3b) that is provided with inlet and discharge openings (2) and is manufactured in a synthetic material, by means of which a storage chamber (4) is provided for receiving fuel, wherein a reinforcement (5) for compensating forces acting on the shell body (3, 3a, 3b) is provided inside the storage chamber (4), wherein the reinforcement (5) comprises a support (8) and a stress relief means (6), wherein the support (8) comprises a receiving chamber (83) that is embodied inside the support (8) and is provided for the stress relief means (6) and wherein the stress relief means (6) is arranged at least partially in the receiving chamber (83) of the support (8) and penetrates the shell body (3, 3a, 3b), wherein the support (8) comprises plane-parallel end surfaces (81, 82) and the support (8) is connected at its end surfaces (81, 82) to the shell body (3) by material engagement, characterized in that the support (8) comprises an open longitudinal rib structure.
  2. Fuel reservoir (1) according to Claim 1, wherein the support (8) is embodied as a synthetic material support.
  3. Fuel reservoir (1) according to Claim 1 or 2, wherein the support (8) comprises an elongated shape.
  4. Fuel reservoir (1) according to Claim 3, wherein the support (8) is embodied in the shape of a straight column.
  5. Fuel reservoir (1) according to Claim 3 or 4, wherein both ends of the stress relief means (6) penetrate the shell body (3, 3a, 3b).
  6. Fuel reservoir (1) according to any one of the preceding claims, wherein the support (8) is welded at its end surfaces (81, 82) to the shell body (3).
  7. Fuel reservoir (1) according to Claim 6, wherein the connection provided by material engagement separates the receiving chamber (83) that is embodied inside the support (8) and is provided for a stress relief means (6) from the storage chamber (4) in a sealing manner.
  8. Fuel reservoir (1) according to any one of the preceding claims, wherein a sealing element (9), in particular a sealing ring, separates the receiving chamber that is embodied inside the support (8) and is provided for a stress relief means (6) from the storage chamber (4) in a sealing manner.
  9. Fuel reservoir (1) according to any one of the preceding claims, wherein the stress relief means (6) acts against a section of the outer surface of the shell body (3, 3a, 3b).
  10. Fuel reservoir (1) according to Claim 5, wherein both ends of the stress relief means (6) act against a section of the outer surface of the shell body (3, 3a, 3b) respectively.
  11. Fuel reservoir (1) according to any one of the preceding claims, wherein the stress relief means (6) is a tension pin that extends preferably at least partially in a longitudinal bore that is embodied as a receiving chamber (83) inside the support (8).
  12. Fuel reservoir (1) according to Claim 11, wherein the tension pin (6) is embodied as a stud bolt or a riveting bolt whose head (61) acts against a section of the outer surface of the shell body (3, 3a, 3b).
  13. Fuel reservoir (1) according to Claim 12, wherein the head (61) is embodied by means of a screw nut or a screw nut together with a washer.
  14. Fuel reservoir (1) according to Claim 12 or 13, wherein the head (61) of the tension pin (6) is separated from the environment in a sealing manner by a cover cap (7) that is attached to the shell body (3, 3a, 3b) by material engagement and preferably is welded thereto.
  15. Fuel reservoir (1) according to any one of the preceding claims, wherein the fuel reservoir (1) comprises a number of reinforcements (5) that are arranged preferably approximately in parallel with each other.
EP12163976.9A 2011-06-24 2012-04-12 Fuel reservoir for a motor vehicle Not-in-force EP2537696B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/462,961 US20120325822A1 (en) 2011-06-24 2012-05-03 Fuel reservoir for a motor vehicle
CN201210213751.2A CN102837597B (en) 2011-06-24 2012-06-25 For the fuel container of self-propelled vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011105780 2011-06-24

Publications (2)

Publication Number Publication Date
EP2537696A1 EP2537696A1 (en) 2012-12-26
EP2537696B1 true EP2537696B1 (en) 2013-12-25

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ID=46045779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12163976.9A Not-in-force EP2537696B1 (en) 2011-06-24 2012-04-12 Fuel reservoir for a motor vehicle

Country Status (3)

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US (1) US20120325822A1 (en)
EP (1) EP2537696B1 (en)
CN (1) CN102837597B (en)

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CN102837597A (en) 2012-12-26
CN102837597B (en) 2015-10-28
EP2537696A1 (en) 2012-12-26
US20120325822A1 (en) 2012-12-27

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